密码强度检测
检测密码评分与熵值
🔒 100% client-side — your data never leaves this pagePassword Input
Strength Result
Strength analysis will appear here
🔒 100% client-side
About this tool
从长度、字符集覆盖和熵值角度评估密码强度，输出直观评分与等级。适用于账号安全自检、注册策略优化和安全培训场景。工具本地运行，不会上传输入密码。
Frequently Asked Questions
What does entropy mean for passwords?
Entropy estimates how hard a password is to guess based on length and character space size.
Is a high score always secure?
Higher scores are better, but reused passwords and leaked credentials still pose significant risks.
Is my password uploaded anywhere?
No. The checker runs entirely in your browser and does not send input to servers.